Smith will start Game 1 of the American League Wild Card Series against the Astros on Tuesday, Scott Merkin of MLB.com reports.
Smith is no stranger to working multiple innings, so the length of his start will likely depend on how he fares. He opened a game for the White Sox on Sept. 10, firing two scoreless frames against the Pirates while striking out three. Hagen ended the regular season with a 1.29 ERA and 0.96 WHIP with a 41:16 K:BB across 28.0 innings.